Report summary
| Field | Value |
|---|---|
| Product | Retatrutide 20mg (family: Retatrutide) |
| Lot identifier | RT-2502-B |
| Analysis | Chromatographic purity (HPLC) |
| Reported result | 99.90% |
| Test date | Aug 27, 2026 |
| Certificate number | COA-2026-3WB8HV |
| Issuing laboratory | Independent testing laboratory; verification portal at ils-lab.com |
| Original report | View the analytical report (PDF) |
| Laboratory verification | Verify certificate COA-2026-3WB8HV with the laboratory |
| Identity reference | CAS 2381089-83-2 |
What this report establishes
The result above describes the sample of lot RT-2502-B that the laboratory analyzed on Aug 27, 2026, under the stated chromatographic method. It supports the reported purity value for that lot. It does not describe other lots or strengths, and it does not establish any attribute the report does not list. Confirm that the lot printed on a vial label matches RT-2502-B before applying this record to it.
How to read this report
Open the PDF and read it in this order. First the sample identity block: the material name, the lot number (RT-2502-B) and the date, which must all match this page and the vial label. Second the identity result: identity is confirmed by HPLC retention-time match (HPLC-RTM) against a reference standard for Retatrutide 20mg (CAS 2381089-83-2); mass spectrometry is not part of this report, so there is no observed-mass value to check (HPLC vs mass spectrometry explains the difference). Third the purity section: the HPLC area-percent figure (99.90% on this lot), the method line (column, gradient, detection wavelength) and the chromatogram itself, where a shoulder or a secondary peak next to the main peak tells you more than the percentage does. Last, the certificate number (COA-2026-3WB8HV) and the laboratory’s verification route, which is how you confirm the document with the issuer rather than with the seller.
Two things this summary deliberately does not add: attributes the laboratory did not report, and any statement about the material beyond its identity and documentation. For a report like this one read line by line, see a peptide COA, annotated. Our guides explain each section of a report in depth: how to read a certificate of analysis, how to read an HPLC chromatogram, what purity percentages mean, and why the label weight is not the peptide weight.
Same material, other listings
- Retatrutide 10mg — lot RT-2502-A, its report
- Retatrutide 30mg — no separately published report; check the lot number on the vial
- Retatrutide 60mg — no separately published report; check the lot number on the vial
Common questions about this report
- What does the 99.90% figure on this report mean?
- It is the main peak’s share of the total detected peak area in the HPLC run the laboratory performed on Aug 27, 2026, under the method stated on the report. It is a chromatographic purity result for that sample of lot RT-2502-B; it is not a claim about other lots, and it is not a weight-percent or net-content figure.
- Is this the whole certificate?
- No. This page summarises the report; the linked PDF is the document itself, with the method line, the chromatogram and the identity section. Read the PDF, then confirm the certificate number with the laboratory.
- How do I know the PDF is genuine?
- Use the laboratory verification link on this page for certificate COA-2026-3WB8HV. The verification page is hosted by the issuing laboratory, not by this site, which is what makes the check independent.
- Does this report apply to the vial I received?
- Only if the lot number printed on your vial label is RT-2502-B. A different lot has a different report; if your lot is not listed on this site, ask support with the lot number before relying on the material.
- Why is there no result for attributes other than purity here?
- The summary lists what the report states. Anything the laboratory did not test is not established by this document, and this page does not add attributes the report does not contain.
How to verify this document
- Open the laboratory verification link for certificate COA-2026-3WB8HV.
- Compare the sample identity, lot, date, and result with the PDF.
- Record the verification date next to the lot in the receiving log (how to verify a certificate).